onth he has 40 texts and the bill is $44. xt month he has 276 texts and a bill of $126.6. scovers that he can change his plan to unlimited texts for $81. is the minimum number of texts Ray must have before it makes sense to sw

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Ray's cellphone texting plan has fixed access fee plus a per text fee.
One month he has 40 texts and the bill is $44.
The next month he has 276 texts and a bill of $126.6.
Ray discovers that he can change his plan to unlimited texts for $81.
What is the minimum number of texts Ray must have before it makes sense to switch to the unlimited plan?
236
O146
0158
O 231
441
*3
&
%23
8
2
%A4
Transcribed Image Text:Ray's cellphone texting plan has fixed access fee plus a per text fee. One month he has 40 texts and the bill is $44. The next month he has 276 texts and a bill of $126.6. Ray discovers that he can change his plan to unlimited texts for $81. What is the minimum number of texts Ray must have before it makes sense to switch to the unlimited plan? 236 O146 0158 O 231 441 *3 & %23 8 2 %A4
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